Fog-bell



RAND 9 JOHNSON.

Fog Bell. v No. 19,949. Patented Apri 13,1959,

UNITED STATES PATENT OFFICE.

A. C. RAND AND R. R. JOHNSON, OF BUFFALO, NEW YORK.

FOG-BELL.

Specification of Letters Patent No. 19,949, dated April 13, 1858.

To all whom it may concern:

Be it known that we, ALoNzo O. RAND and RUFUS R. JOHNSON, of the city of Buffalo, in the county of Erie and State of New York, have invented a certain new and useful Improvement in Fog-Bells; and we do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and the letters of reference marked thereon.

The nature of our invention relates to the arrangement of mechanism as herein described so that the hammer may strike the bell any given number of blows to indicate the particular course of the vessel; the mechanism which determines the number and timing of the blows being distinct from the mechanism which produces the blows.

Figure I is a side elevation No. 1 showing the arrangement of the mechanism which produces the blows upon the bell and No. 2 the arrangement of the mechanism which produces the number and timing of the blows. Fig. II is a plan of the hammers and screw trip connected with the mechanism No. 2 and the spring pall and alarm connected with mechanism No. 1.

' Fig. III is a plan of the alarm.

A represents a bell which is supported 0 the outside of the case.

B is the hammer. C, spiral spring connected to the handle of the hammer and to the case W by the force of which the hammer is made to strike the bell. D, E, F, lines of wheels. h, pinion on same shaft with E and into which F works. 2', pinion on same shaft with D and into which E works. spring pall. This is connected with the case W by the pin (6) upon which it is supported and catches into a notch in the wheel D and holds the wheels against the force of the main spring. K, spring, act-ing upon the pall to hold it down to the wheel D. L, brake; attached to the alarm 42 and which may be forced against the wheel D to regu-v late the movement thereof. M, main spring. N, O, P, Q, represent ordinary clock work arrangement operated by the main spring 00. R represents a screw trip, on the same shaft with the wheel N. It is for the purpose of setting ofl the hammers s, s, s, at the proper time.

t t are cords connected with the hammers may be given to indicate the tack of the vessel. U, alarm. This passes through the case from one side to the other and over the spring pall J. It has a wedge form projection (r) which strikes the pall upon being pressed inward and disengages it from the catch in wheel D, and. the series of wheels No. 1, are thereby put in motion; causing the hammer B to strike the bell A, any number of blows in rapid succession. By pressing more forcibly upon the alarm, the break L is brought against the wheel D, by which the motion and the number of blows upon the bell can be controlled. V, V, outside case, which supports mechanism No. l and No. 2. X main spring which moves the mechanism No. 2.

Operation: The clock work or mechanism N o. 2 is allowed to run constantly. There are four spiral wings on the trip wheel R. These wings move over the ends of the handles of the hammers s, s, s, and raise them for a blow. As the wings move off; the hammers fall by their own weight and strike the pall J, and lift it from its catch in the wheel D. The wheel D, takes one revolution when the pall again catches, and stops it. One revolution of the wheel D, carries the wheel E one sixth revolution, so that the pin 12?, strikes the handle of the bell hammer and expands the spring C. The pin n moves ofl from the handle, and the hammer is brought against the hell with all the force of the spring 0, so that the number of blows given by the hammers s, s, s, or either of them will be repeated by the hammer B, upon the bell A. Now suppose the vessel is sailing before the wind. Two of the hammers s, .9, would be raised by means of the cords t, t, so that the trip wheel would not touch them, leaving one hammer to be operated by the trip wheel. This would gii e one blow upon the bell, repeated at regular intervals, and wouldindicate sailing. before the wind. If the vessel is sailing upon the larboard tack, two hammers are put within reach of the trip wheel. Consequently two blows in succession, will be given upon the bell, and repeated at regular intervals, and indicate the larboard tack If the vessel is upon the starboard tack, the three hammers are a1- relatively to each other for the purposes, lowed to play. Consequently three blows and substantially as herein set forth.

will he "iven 11 on the bell in succession. and repeatea at regular intervals, and will indi- ON 5 cate the starboard tack. b We claim WVitnesses: The arrangement of mechanism N0. 1, E. B. FORBUSH,

and mechanism No. 2, (and equivalents) F. S. BALDWIN. 

